Narendra Modi’s popularity is still high in western UP but will that be adequate to repeat a 2014-like sweep? As eight constituencies go to polls on Thursday, ET takes a closer look into what’s turning into a seat-to-seat battle. While the SP-BSP-RLD alliance may disrupt the caste math in many pockets, the Congress is relegated to the role of a vote-splitter. Aman Sharma, The Economic Times Explains